Questions tagged [usb-2]

USB 2.0 (Hi-Speed) is a USB specification that can transmit data at up to 480 Mbit/s.

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74
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5answers
258k views

Verifying USB connection speed (USB 3 or USB 2?)

I've purchased several new USB 3 capable drives to use with my new (USB 3 capable) laptop. They connect ok but I suspect they're silently falling back to USB 2. The sustained transfer rates I'm seeing ...
2
votes
1answer
382 views

Maximizing speed of USB 2.0 clients on USB 3.0 hub

I need to connect 2 USB 2.0 cameras and one USB 3.0 SSD to a single USB 3.0 hub. I would like both of the cameras to run at 480 Mbps and the SSD to use the rest of the bandwidth. Is this possible? I ...
38
votes
5answers
137k views

Does a USB hub affect performance?

I have two devices I want maximum throughput and latency with (MIDI drums and MIDI keyboard for example.) Would connecting both to the same USB port via a hub effectively limit the maximum data ...
26
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1answer
83k views

Why Do Some USB Cables Have Two USB Connectors at the End?

I've recently bought an external hard drive enclosure and it had arrived with an USB cable, with one USB connector on one side and two on the other. Why do some USB cables have two connectors while ...
66
votes
4answers
481k views

Speed comparison between USB 2.0, USB 3.0, eSATA, Firewire and Thunderbolt

Which external connection has the highest data throughput with respect to the headers used? I would appreciate a slowest to fastest list including USB 2.0, USB 3.0, FireWire 400, FireWire 800, eSATA ...
5
votes
3answers
8k views

Does the device that supports USB 3.0 work via computer that supports USB 2.0

I am planning to buy external hard drive that supports USB 3.0. Will it work with my old notebook that has USB 2.0?
1
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3answers
10k views

Can I safely connect a USB 2.0/1.1 internal pin block to a USB3.0 motherboard header?

I've been working on my new PC build with the GA-Z77X-UD5H-WB WIFI motherboard. This board comes with a wifi/bluetooth card that goes into a PCIe x1 slot... but the card also wants to be connected to ...
16
votes
1answer
4k views

Why is there a speed increase when using a USB 2.0 device with a USB 3.0 port?

I know this question, or similar questions, have been asked before, but still I am curious… My laptop has two USB 3.0 ports and—on occasion—I will plug in a Western Digital external hard drive which ...
7
votes
5answers
19k views

Extend USB 3.0 cable

I have a couple of new USB 3.0 devices which connect to my USB 3.0 ports via the new "Blue" USB 3.0 cables that end in what looks like a USB 2.0 Type A connector. Indeed, the USB 3.0 devices will ...
8
votes
4answers
120k views

USB 2.0 and USB 3.0, how can you tell the difference?

I know the speeds would obviously be a key factor, but is there any spot on way to tell if a device is USB 2.0 or 3.0 such as a USB flash drive?
2
votes
3answers
1k views

How to get more full speed USB 2.0 ports on a modern laptop?

Modern laptops just have a few USB ports and to extend thoose you are supposed to use a USB hub. My issue is that I need to connect 4 highspeed USB 2.0 cameras to my laptop and while still keeping two ...
1
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2answers
9k views

Why does Device Manager show “Intel(R) USB 3.0 eXtensible Host Controller - 0100 (Microsoft)” when I have only USB 2.0 ports?

My laptop's model number is an ASUS X205TA-SATM0404G. It has 2 USB 2.0 ports, which I have verified by looking up the specs online and also via the software and techniques mentioned here: How to ...
14
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2answers
3k views

Is a USB 3 Type A-to-A cable dangerous with USB 2 ports?

I recently purchased a USB 3.0 hub, and was surprised when I opened the box to find that it used an A-to-A cable for it’s main connection; see picture below. A “Type A” connector is the rectangular ...
11
votes
5answers
12k views

Would USB 3 make a difference for a USB 2 5400 RPM drive?

I've got a USB 2 5400 RPM external HD. I'm thinking of getting a new computer with USB 3 ports. If I'm currently getting read/write speeds from the external HD on USB 2 of roughly 30 mb/s (both read ...
3
votes
4answers
71k views

USB 3.0 ports backwards compatibility problems with 2.0 devices?

I see some info on the net that suggest that I should be able to get my USB 2.0 devices to work in 3.0 ports. I only have two 2.0 ports on my new computer, and six 3.0 ports. I have installed drives....
-1
votes
1answer
73 views

Do USB power supplies send signals indicating energy level being delivered?

Do USB power supplies send signals to tell the connected device (tablet/phone/camera) how much power is being supplied? Or, is measuring it the only way for the device to know how much energy is ...
7
votes
3answers
88k views

Extremely slow USB transfer speed

I am using Windows 7 32-bit, and have a Transcend 8 GB USB 2.0 flash drive. I have formatted the drive to NTFS using the Windows format tool. The problem is that when moving or copying files to and ...
2
votes
2answers
4k views

Are all USB-2 devices compatible with USB-3 port?

On my Gigabyte 880GM-USB-3 motherboard there are 2 USB-3 ports. Drivers are installed successfully in Windows 7 OS. USB-3 ports are working properly when any USB-3 devices are plugged in e.g. USB-3 ...
1
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2answers
6k views

Is it possible to connect one USB device to two systems at the same time and have the device be available for use on both systems without switching? [duplicate]

I've got a WiiU/Swtich GameCube USB adapter that I'd like to plug into my computer (device 1) as well as my Nintendo Switch (device 2) and have both devices recognize that USB adapter and the ...
0
votes
2answers
3k views

USB extender cable - can multiple non-active be used to exceed the USB length limit if used with a powered hub?

If multiple non-active USB cables are chained together such that the combined cable is longer than the normal USB length limit but are placed between two powered USB hubs, will that effectively create ...
0
votes
2answers
4k views

USB 3.0 hard drive in usb 3 port only recognized as usb 2 and detected only when connected to usb2

I have a WD MY Passport ultra 4TB usb 3.0 external hard drive. It does not function when I connect it to an usb 3.0 port, only usb 2.0 recognises the device. How do I resolve this issue?